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Work machine

  • US 9,574,324 B2
  • Filed: 05/10/2012
  • Issued: 02/21/2017
  • Est. Priority Date: 05/18/2011
  • Status: Active Grant
First Claim
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1. A work machine comprising:

  • two or more actuators to drive a common drive object, the actuators including at least one hydraulic actuator and one electric actuator;

    a hydraulic pump for to supply pressurized fluid to the hydraulic actuator;

    an electric power supply device to supply electricity to the electric actuator;

    an operating device having a control lever to output, through a single operation via the control lever, an operating signal for concurrently operating the hydraulic actuator and the electric actuator;

    a controller configured to switch between a plurality of drive modes including a hydraulic-alone drive mode and an electric-alone drive mode, wherein the hydraulic-alone drive mode drives only the hydraulic actuator among the two or more actuators to thereby drive the drive object when the operating device is operated, and the electric-alone drive mode drives only the electric actuator among the two or more actuators to thereby drive the drive object when the operating device is operated; and

    an input device used by an operator to select, at the operator'"'"'s request, any one of the plurality of drive modes including the hydraulic-alone drive mode and the electric-alone drive mode,wherein, when one of the hydraulic-alone drive mode or the electric-alone drive mode is selected with the input device, the controller is further configured to switch the drive mode of the drive object in accordance with the drive mode thus selected.

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